Posts

Generalize a problem on Quora and then solve it.

This is an interesting exercise.

Without the assumption of normality we derive the first order asymptotic covariance of the sample mean and sample standard deviation in a rather elementary way. This paper was written in September 2014.

I touch upon covid. Enjoy reading!

I got interest in Jackknife recently, wanting to write down this note for future myself. It might be useful for other people as well.

I write down a couple of notes on plotting matrices. You can see some amazing pictures; I promise.

I give xicor a try on a famous data set.

Toss a fair coin 10000 times, what’s the probability of observing heads showing up exactly 5000 times?

Based on Kolmogorov general definition of mean and some well known mean inequalities, we are able to derive a number of new inequalities.

It is about how many bins to choose when making a histogram.